Use of uninitialized resource in FortiOS and FortiProxy - CVE-2023-37930
Published: October 24, 2025
Vulnerability identifier: #VU117646
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-37930
CWE-ID: CWE-908
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to usage of uninitialized resources within the SSL-VPN webmode. A remote authenticated user can send specially crafted requests to the SSL-VPN websocket, trigger uninitialized usage of resources and perform a denial of service attack or execute arbitrary code on the device.
Affected software
FortiOS
FortiProxy
FortiProxy
How to mitigate CVE-2023-37930
Install updates from vendor's website.
FortiOS - addressed in versions 6.4.15, 7.0.13, 7.2.6, 7.4.1
FortiProxy - addressed in versions 7.0.13, 7.2.7, 7.4.0
FortiProxy - addressed in versions 7.0.13, 7.2.7, 7.4.0